Woodfield Systems [India] Pvt. Ltd. Manufactures Bottom Loading and Unloading Arm. Woodfield Systems [India] Pvt. Ltd. Is an ISO 9001:2000 certified company. The Bottom Loading and Unloading Arm are used for loading/ unloading road tankers or railcars through a connection at the lowest point of the tank compartment. Through its operating range, it can handle the different connection positions and heights of the tankers or railcars. Bottom Loading and Unloading Arms are specifically designed to deal with the different fluids and situations and therefore available in material like carbon steel, stainless steel, aluminium and PTFE lined steel/ stainless steel.